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Finding the Fourth Proportional to 71,019.72, 106,549.02 and 21,098.88

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Solution

The fourth proportional to 71,019.72, 106,549.02 and 21,098.88 is: 31,654.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.72 : 106,549.02 = 21,098.88 : x
  2. Step 2: Convert to fraction form
    71,019.72/106,549.02 = 21,098.88/x
  3. Step 3: Cross multiply
    71,019.72x = 106,549.02 × 21,098.88
  4. Step 4: Simplify right side
    71,019.72x = 2,248,064,987.10
  5. Step 5: Solve for x
    x = 2,248,064,987.10/71,019.72
  6. Step 6: Final answer
    x = 31,654.10

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